stringdemo.java

来自「java是一种面向对象程序的语言,我这里介绍了有关java课件的许多事例,它能帮」· Java 代码 · 共 56 行

package book.ch6;

/**
 * User: hb
 * Date: Jan 5, 2004
 * Time: 4:51:33 AM
 */
public class StringDemo {
	public static void main(String[] args) {
		String s;
		s = "String test ";
		s = new String("String test ");

		int stringLength = s.length();
		System.out.println("stringLength = " + stringLength);

		boolean startTest = s.startsWith("Str");
		boolean endTest = s.endsWith("est");
		System.out.println("startTest = " + startTest);
		System.out.println("endTest = " + endTest);

		int blankIndex = s.indexOf(' ');
		System.out.println("blankIndex = " + blankIndex);

		int subStringIndex = s.indexOf("est");
		System.out.println("subStringIndex = " + subStringIndex);

		int lastIndex = s.lastIndexOf('s');
		System.out.println("lastIndex = " + lastIndex);

		String s2 = "String test2";
		int compare = s2.compareTo(s);
		System.out.println("compare = " + compare);

		boolean equalTest = s2.equals(s);
		System.out.println("equalTest = " + equalTest);


		char singleChar = s.charAt(3);
		System.out.println("singleChar = " + singleChar);

		String subString = s.substring(3);
		System.out.println("subString = " + subString);

		String trimString = s.trim();
		System.out.println("trimString = '" + trimString + "'");

		String upperCase = s.toUpperCase();
		System.out.println("upperCase = " + upperCase);

		String lowerCase = s.toLowerCase();
		System.out.println("lowerCase = " + lowerCase);

	}
}